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Date:   Wed,  4 May 2022 18:29:08 +0000
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Message-Id: <20220504182908.1322874-1-yuanchu@google.com>
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References: <20220504001153.119485-1-sj@kernel.org>
Subject: [PATCH v3] selftests/damon: suppress compiler warnings for huge_count_read_write
From:   Yuanchu Xie <yuanchu@google.com>
To:     Shuah Khan <shuah@kernel.org>, Markus Boehme <markubo@amazon.de>,
        SeongJae Park <sj@kernel.org>
Cc:     rientjes@google.com, Andrew Morton <akpm@linux-foundation.org>,
        linux-mm@kvack.org, linux-kselftest@vger.kernel.org,
        linux-kernel@vger.kernel.org, Yuanchu Xie <yuanchu@google.com>
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Precedence: bulk

The test case added in commit db7a347b26fe ("mm/damon/dbgfs:
use '__GFP_NOWARN' for user-specified size buffer allocation")
intentionally writes and reads with a large count to cause
allocation failure and check for kernel warnings. We suppress
the compiler warnings for these calls as they work as intended.

Signed-off-by: Yuanchu Xie <yuanchu@google.com>
---
 tools/testing/selftests/damon/huge_count_read_write.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/damon/huge_count_read_write.c b/tools/testing/selftests/damon/huge_count_read_write.c
index ad7a6b4cf338..91bd80c75cd9 100644
--- a/tools/testing/selftests/damon/huge_count_read_write.c
+++ b/tools/testing/selftests/damon/huge_count_read_write.c
@@ -2,6 +2,8 @@
 /*
  * Author: SeongJae Park <sj@kernel.org>
  */
+#pragma GCC diagnostic ignored "-Wstringop-overflow"
+#pragma GCC diagnostic ignored "-Wstringop-overread"
 
 #include <fcntl.h>
 #include <stdlib.h>
-- 
2.36.0.464.gb9c8b46e94-goog